Apparatus for producing ground articles



I L. R. HEIM APPARATUS FOR PRODUCING GROUND ARTICLES Filed Feb. 5, 1921 2 Sheets-Sheen 1 4 ub iemtpi June 1', 1926 L. R. HEIM APPARATUS FOR-PRODUCING GROUND ARTICLES 5, 1921 2 Sheets-Sheet? Filed Feb,

rigged 'June 1,1926.

uNlrs'o j 'STATES PATENT" OFFICE.

LEWIS R. 11am, on pennant,

oomc'rronr, nssrenon roman 1mm 'GBIIDE l COMPANY, OF DANIBU BY, CONNECTICUT, A CORPORATION OF CONNEGIICUT.

APPARATUS F03 PRODUCING GBO'l J'ND ARTICLES.

- Application fled rebmn- 's, 1921. seim 111;. 442,117.

. This invention relates to grinding andgrinding apparatus. One of the objects thereof is to provide an art of grinding. which may be readily carried on and which 5 will give dependable and accurate -results.

through long-continued use. Anotherobject is to provide practical grinding apparatus of efficient action andadapted to main tain its parts in proper condition for accurate work. Another object is to provide simple and compact mechanism well adapted.

5 claims.

In the accompanying drawings, in which is shown one of various possible embodiments of the mechanical features. of this in vvention, I a 4 Figure -1 is a plan view; and Figure 2 is a front elevation of the grinding apparatus, the rearwardly extending portions of the several parts not being shown in Fig.2.

Figure '3 is a side View on an enlarged scale of the truing device; and Figure 4 is a sectional-view taken on th line 4+4 of Fig. 3.

-Referring more particularly to'Figures 1 provided a main base or standard upon the respective ends of which are 'pivotally mounted the tables 11 and 12 pivoted thereon as by means of the pins l3 and 14, respectively, indicated in dotted lines in Figure 1. The tables 11 and 12 are each provided with a pair of slots 15 and 16, respectively, through which extend the clampingscrews 17 and 18. respectively, for clamping the tables 11 and 12 to the main frame or standard 10 at anydesired position to which they may be swung about their pivot pins.

and 2, it willjoe noted that there has been The table 11 isprovided with ways 19, in which is slidably mounted the bearing frame 20 which supports the bearings 21 and 22. Housed in the bearings 21 and 22 is a shaft 23 ,upon' one end of which is mountcda suitable chuck 24, in which is adapted to be secured in any convenient manner an abrasive wheel 25, the. shaft 23 mounted upon its other end a collar 26 to prevent'axial movement thereof. A pulley 27 secured to the shaft 23 intermediate the bearings 21 and 22 serves to transmit rotation to the abrasive wheel from any suitable source of power ,as by means,pf a belt. The bean mg frame 20 may be moved longitudinally of the wa s19 and may be clamped in any desired a justed position by means of the clamping bolts 28. J

Upon the ivotally mounted table 12 at the other end '0 the standard 10 a substantiallysimilar construction is employed for mounting the abrasive zwhecl 29 in operative relation to the abrasive wheel 25. This construction embodies substantially, similar parts and comprises ,the bearing frame'30 slidably mounted in the ways 31 on the pivotally adjustable table '12, the bearing frame supporting the shaft 32 in suitable bearings 21 and 22"thereon and at one end of which is mounted the chuck 33 for supporting the abrasive wheel 29. A suitable col- ,lar 34 is provided upon the end of the shaft 32 to prevent axial movement thereof and a, pulley 35 is mounted" u on the shaft to transmit rotation to the a rasive wheel-29. v i

The bearing frame 30', however, is provided with a rack 36 facing downwardly and adapted to engage the pinion 37 mounted upon a shaft supported'in a suitable bearing 39 preferably integral with the table 12. A

lever 39' rigidly secured to the shaft 38 has 1 its end connected to a tension spring 40, one end of which is securedto the standard 10 so as to urge the pinion 37 in such a rotative direction as to tend to move the rack 36 and its associated abrasii e wheel 29 in a direction toward the abrasive wheels 25. Movement of the bearing frame or carriage 30, and hence of the abrasive wheel 29, in the direction toward the wheel 25 is limited by means .of a screw 40 extending through a downwardly extending split arm 41 at the end of the-carria e and adaptedto abut against the end of. the table 12. The screw may be manually operated to adjust the wheel.29 toward or away 'from' the wheel 25 as desired, and to preserve the adjustment given the screw 40 there is provided a clamping screw 42 at the lower end of the arm 41 to .clamp the screw inits adjusted positlon. A

hand lever 43 rigidly securedto the shaft 38 on which the pinion 37 is mounted permits of a manual withdrawal against the action of the spring 40' of the carriage 39 and its associated. wheel 29.

The "grinding ap aratus" thus far de-.

scribed is particular y adapted for use in grinding cylindrical bodies, such as rolls or example, and to facilitate its operation upon such articles, a work carrier or rest is employed to support the articles-operated Letters Patent for a upon in proper relation to the abrasive wheels 25 and-29. Such a support or work carrier as is described for example in my United States-Letters Patent No. 1,210,936,

may be employed and no detailed descriptively high speed in a direction toward the observer, as viewed in Figs. 1 and 2, and the wheel 25 is rotated in a "reverse direction at a relatively low speed. The wheel 29 serves to perform the grinding action upon the parts or the rolls supported on the carrier, which extends between the'two wheels,

and the wheel 25 serves to control or regulate the rate of rotation of the parts or rolls upon the carrier during the action of the grinding wheel 29 thereon.

In the embodiment herein described, the

abrasive wheels 25 and 29 are preferablyof.

annular form and are beveled as indicated in Fig. 1 so that upon the proper angular re- 1 lation between the wheels 25 and 29 hav1ng 86' been: established by means of the pivotal adjustment. of the tables 11 and 12 as hereinbefore described, there will remain a sufficient space between the rear portions of the wheelsto permit the discharge of the parts operated upon after their passage between the operativesurfaces of the wheels.

It will beunderstood that the regulating action of the wheel 25 and the grinding action of the wheel 29 upon the articles operated upon is attained by reason of the operating surfaces of the two wheels traveling in opposite. directions and that in the embodiment herein described such travel in opposite directions is conveniently accomplished by the opposite rotation given the wheels. I may, however, also employ disc neeaaaa are peripheral, in which instance the wheels are rotated in.the same direction for accomplishing the desired travel in opposite directions of the operating surfaces of the wheels. Such a grinding apparatus emplaying disc wheels is shown, for example, in my United States Patent No. 1,264,930..

In the operation of this grinding iappai-fr ratus uponcylindrical bodies, for example?- the relative action thereon between the reg ulating wheel 25 and the work carrier. above referred to is such that the work, while being ground by the grinding wheel 29 is progressively fed or drawn along the carrier.

This automatic feed. action takes place by reason of the relative inclinationiexisting between the pathof travel of the parts or rolls along the carrier and the path of the operative surface of: the regulating wheel 25. By varying this relative inclination any degree or rate of-travel or feed of the parts along the carrier may be attained.

In order that the-parts operated upon may be given a truly cylindrical form, it is essential that the paths of contact of the operative surfaces of the abrasive wheels 25 and 29 with the parts or rolls be parallel and that such paths of contact be parallel irrespective of the degree of the relative inclination given the path of travel of the parts with respect to the path ofthe operative surface of the regulating wheel 25. Accordingly there has been provided a means for readily and effectively truing the operative surfaces of the wheels 25 and 29 to present parallel paths of contact to the work' for a given adjustment of the rate of feed of theparts.

'A post 57, referring more particularly to Fig. 2, is slidably mounted at its lower end in the ways 44 of a secondary frame member and is adjustable in a vertical direction by means of a hand screw 45- rotatably mounted in the lower end of the secondary frame and provided with collars 46. to prevent axial movement thereof. The secondary frame carrying the ways 58 is in turn mounted in ways 47 secured to the frontjpart of the standard 10 of the machine and is movable within the ways 47 "by means of the hand screw 48, so that the post 57 may be adjusted longitudinally of the standard 10 of the machine. A'set screw 49 serves to lock the post in its adjusted vertical position.

Upon the upper end of the post 57 (see Fig. 3) there is detachably bolted, by means of bolt 84, an L-sha-ped bracket 58 upon the transversely extending portion of which is provided a pair of lugs 59 in which is pivotally mounted by means of the bolt (30 a 29 and at its central portion is provided with a depending lug 62 slotted so as to straddle the clamping bolt 63 extending through the pair of upwardly standing lugs 64 integrally formed with thebracket 58.

The guidingmember 61 may thus be given any (l6S1Ie(l 1I1Cl1I1at10I1 with the horizontalplane by swinging the member 61 about its pivot 60 and clamping the guide member 61 in its adjusted position by means of the clamping screw 63.

The guide member 61 is tapereclor beveled in 'an upward direction, the beveling extending throughout substantially its entire length. The upper beveled portion of the guide member 61 serves as the supporting and guiding surface fora movable carriage 65 whose under, side is internally beveled to a corresponding degree. At the lower portion of the guide memberj61 is a pair of outwardly extending flanges 66 and 67 adapted to retain the carriage 65 upon the beveled portion of the guide member 61 by means of the L-shaped members 68 and 69 suitably secured to and extending throughoutsubstantially the entire length of the carriage 65, the L-shaped retaining members 68 and 69 cooperating respectively with the flanges 66 and 67 of the guiding member 61. The carriage 65, is thus positively retained upon the guiding member,61 and is also positively guidedthroughout its travel, as will be more clearly hereinafter described.

At a. suitable pointon the sides of the carriage 65 there are mountedthe abrading tools 70 and 71 adapted. to be brought into operative relation with the abrasive wheels Y25 and 29 respectively. -The abrasive tools 70 and 71mav bemade of any material harder than the abrasive material of thewheels 25 and 29 and mav conveniently take ing member'61 and providedat its outer end with a collar 73 and an outwardly extending portion 74 upon which is rigidly fixed a hand wheel 75 for operating the screw .72. Intermediate of the collar 73 and the hand wheel 75, the unthreaded portion of the screw member 72 is engaged by the bearing portion 76 of a bracket 77 which is rigidly secured to the front end of the movable carriage 65 as by means of the screws 78. The bearing portion 7 6 of the bracket77. being restricted between the collar 7 3 and the hand wheel 75 on the screw member 72, is thus caused to partake-ofthe same movement as is the screw 72, while it is threaded into or out of the guiding member'fil and hence the carriage 65 is similarly moved with the bracket member 77. In the positionof the several'parts, as shown in Fig. 3, thefcarriage 65 and its associated propelling screw 72 are in their innermost position relative to the guiding member 61 and the" abrasive wheels 25 and 29. r v,

The carriage 65 is provided at its upper portion with'a reservior 79, which reservoir is preferably integrally formed with the carriage 65 and extends and is open at its top throughout substantially the entire length of the carriage 65. At points substantially directly over the abrading tools 70 and 71 there areprovided two channels 86 and 81 leadingfrom the reservoir 79 in the general direction toward the abrading tools 70 and 71 respectively. A pipe 82 provided at its lower end. with a valve 88 is positioned di rectly over the opening in the reservoir 79 ads and leads from any suitable source of sup ply of a suitable cooling fluid so that the reservoir 79 may be continuously supplied with cooling fluid. Thelatter passes through the exit passages 80 and 81 upon the upon the abrasive wheels- 25 and 29. The streams of cooling fluid, which may be water,

are thus made to travel with the'abrading tools throughout the extent of their movement and the longitudinally extending opening in the upper portion of the reservoir 79 permits the stationary pipe 82 to maintain a constant level of the cooling fluid in the reservoir 79 without the necessity of a flexible connection between the source of supply and the reservoir itself; The pipe 82 may thus be stationa'rily positioned and the valve 83 permits the adjustment of the'rate of flow of the fluid into the reservoir 79 to substantially equal-the rate of flow of the fluid upon the abrading tools 70 and 71. I

In operating the truing device hereinbe-- fore described, the relative inclination of the path of travel of the abrasivetool with respect to the path of the operatlve surface of the regulating wheel 25 is first adjusted to coincide substantially with the relativein- 'clination between' the pathof travel of the work to be operated upon along the earner hereinb'e fore referred to and the path of the operative surface of the'regulating-wheel 25.

Such adjustment of the relative inclination i s made to correspond to agiven desired rate of feed of-the work along" the carrier, as

has hereinbefore been described During the operatlon of the trulng devlce the abrasive wheels 25 and 29 are rotated in such direc-' tions as to cause the adjacent operative surthe embodiment hereindisclosed are made to rotate in the directionttoward the observer as viewed in Figs. 1 and 2. The operativesurfacesof 'the abrasive. wheels 25. and 29 'havingbeen preliminarily adjusted into substantial parallelism by meansof the pivotal: ly mounted tables-11 and 12, the abrading toolmay thereupon be adjusted toward or .awa'yfrom the operative surface of the regu lating wheel 25; for example, by means of the hand screw. 48,'and the operative surface ofthe other abrasive wheel, as 29, may thereupon be adjusted toward or away from the operative surface oftbe regulating wheel 25 to any desired degree by means of the hand screw 40. The relative adjustments in the horizontal plane .just referred to may be made to determine the amount of material to be removed or abraded from the operative surfaces of the wheels and 29 by the abrading tools 70 and 71 respectively. Ad-

justment of the abrading 'fwith respect to'the operative surfaces of the "tive surfaces of the .wheels 25 and 29 as 00-.

1 wheels 25 and 29 may be made by means of,

the hand screw and is preferably such as to coincide substantially with the relative vertical adjustment given the path of travel of the work to be operated on with-respect to the operative surfaces of the two wheels.

I-The abrading tools 70 and 71 are thereupon advanced across the operative surfaces 0 the wheels by means of the hand wheel 75; and the. screw72, as .will be clear from the description hereinbefore set forth.

QThe abrading tools are thus made to asa path of travel relative to the. operafrom the post 57 and may be readily replaced by the work carrierto continue the grinding operations andthat the truing devices herein described'may be readily and conveniently placed in operative position to make possible a quick truing of the operalive surfaces of the wheels.

Itgwill further be noted that there has beenprovided in this invention an apparatus and art in which the several objects here inbefore noted, as well as others of this invention', are attained and in which many, ad-

' vantages are achieved.

As many possible embodiments may be made ofthis invention. and as many changes might be made in the embodiment above set forth, it be understood that all matter tools vertically.

hereinbefore described and shown in the accompanying drawings is to be interpreted as illustrative and notin a limiting sense.

I claim:'

-1.. In apparatus-loftlie general nature of that herein described, in combination, a grinding wheel normally to be rotated at a relatively high speed, a regulating wheel adapted normally to be rotated at a relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for rotating both of said wheels at a relatively high speed, truing means adapted to operate upon both of said wheels, a movable carriage for mounting and advancing said truing means operatively with respect to the operative surfaces of said two wheels, means carried by said carriage forming a trough extending in the direction of advance of said carriage and having an outlet positioned to permit discharge of a cooling fluid from said trough and onto said truing means, and relatively fixed means with respect to which said garriage and trough are movable for supplying cooling fluid to said trough.

2. In apparatus of the general nature of that herein described, in combination, a grinding wheel normally to be rotated at a relatively high speed, a regulating wheel adapted normally to be rotated at a relatively low speed, said wheels being adapted to present operative surfaces traveling in oppgsite directions, means for rotating both of said wheels at a relatively high speed, a pair of truing tools each adapted to operate upon one of said wheels, a movable carriage for mounting said tools and for moving said tools operatively with respect to the operative surfaces 'of said two wheels, a reservoir for receiving a cooling fluid mounted upon said movable carriage and having an opening in the upper part thereof extending in the direction of travel of said carriage, means for guiding a stream of cooling fluid from said reservoir onto each of said truing tools, and relatively fixed means for supplying said reservoir with cooling fluid through the opening therein and as said carriage and reservoir are moved relative to said wheels.

3. In apparatus of the general nature of that herein described, in combination, a movable carriage, means for mounting a cutting tool on 'said carriage, a trough carried by said carriage for receiving a cooling fluid, said trough extending in the direction of travel of said carriage, means for conducting cooling fluid from said trough onto said cutting tool, and means with respect to which said carriage is movable arranged to supply said trough with cooling fluid.

4. In apparatus of the general nature of that herein described, in combination, a. grinding wheel adapted normally to be r0- tated at a relatively high speed, a regulating "relatively low speed, said wheels being adapted to'present operative surfaces traveling in opposite directions, means for rotating both of said wheels'at arelatively high speed, a pair of truing tools, a movable carriage for mounting said pair of truing tools, each of said tools being adapted to operate on one of said wheels, means for guiding said carriage between said wheels and along a predetermined path of travel, means for adjusting the angular inclination of said guiding means with respect to the path of travel of the operative surface of said regulating wheel, means for locking said guiding means in adjusted position, and means for advancing said carriage along said guiding means. v

5. In apparatus of the general nature of that herein described, in combination, a grinding wheel adapted normally to be rotated at a relatively hi h speed, a regulating wheel adapted normally to be rotated at a relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for rotating both of said wheels at a relatively high speed, a pair of truing .tools, a movable carriage for mounting said truing tools, each of said toolsbeingadapted to operate on oneof said wheels, means for guiding said carriage between said wheels, means for adjusting the relative inclination between thepath of travel of. said carriage formed by said guiding means and the path of the operative surface of said regulating wheel, means for vertically adjusting said guiding means'with respect to one of said wheels, and means for advancing said carriage along sald guiding means.

6. In apparatus of the general nature of that herein described, in combination, agrinding wheel adapted normally to be rotated at a relatively high speed, a regulating wheel adapted normally to be rotated at a relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for rotating both of said wheels at a relatively high speed, a pair of truing tools, a movable carriage for mounting said, truing tools,- each of said tools being adapted to operate on one of said wheels, means for guiding said carriage between said wheels, means for adjusting the relative inclination be tween the path of travel ofsaid carriage formed by said guiding means and the path of the operative surface of said regulating wheel, means adapted to permit adjustment of said guiding means toward and away from the operative surface of one of said wheels, and means for adjusting one of said wheels toward and away from the operative surface of the other of said wheels.

7. In apparatus of the general nature of that herein described-fl in combination, a

grinding wheel adapted normally to be rotated at arelatively high speed, a regulating wheel adapted normallyto be rotated at "a relatively low speed, said wheels being adapted to present operative surfaces traveling ln'opposite directions, means for rotating both of said wheels at a relatively high speed, truing 'means adapted to operate upon both of said wheels, a movable carriage for mounting said truing means and adapted to advance said means into operative relation with said wheels; and means for vertically adjusting said truing means with respect to one of said wheels.

8. In apparatus of the generalnature of that herein described, in combination, a grinding wheel adapted normally to be r0- tated at arelative'ly high speed, a regulatingwheel adapted normally to be rotated at a relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for retating both of said wheels at a relatively high speed, truing means adapted to operate upon both of said wheels, a. movable carriage for mounting and advancing said truing means in operative relation to said wheels, a reservoir for receiving a cooling fluid mounted upon said movable carriage and .movable therewith, and means for guiding a stream of cooling fluid from said reservoir to said abrasive means. I

9. In apparatus of the character described, in combination, a movable carriage extending longitudinally in the direction of travel thereof, means for mounting a cutting tool on said carriage, a reservoir adapted to receive a cooling fluid mounted upon said carriage and having an opening in the u per part thereof extending longitudinally of said carriage, means for guiding a stream of cooling fluid from said reservoir -tol said cutting tool, means for advancing tated at a relatively high speed, a regulat-.'

ing wheel adapted normally to be rotated ata relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for rotating both of said wheels at a relatively .high speed and in directions to present adjacent operative surfaces traveling downwardly, a relatively fixed guiding member extending between the adjacent operative surfaces of said two wheels and having lat eral guiding surfaces extending lengthwise thereof but inclinedupwarc' 1y toward one another, acarriage movably supported upon said guiding member and having interior inclined guidin surfzices for coaction .v with said inclined guiding surfaces of said guiding member, a pair of truing tools mounted upon saidcarriage, onefor action upon each of said wheels, and means for advancing said carriage along said guiding member.

In testimony whereof, I have signed my name to this, specification this 3rd day of January, 1921. 4

. LEWIS R; HEIM. 

